Doctor uses alien assassin's time device

The Doctor identifies an alien ultra-sonic disintegrator as advanced extraterrestrial technology and deduces it is a crude time machine. Reactivating the assassin's concealed temporal circuit in the captured case, he sends the unconscious killer vanishing into the temporal void. The Brigadier witnesses the impossible disappearance of the assassin from the ambulance under Benton's supervision, confirming the Doctor's theory. This bold intervention temporarily neutralizes the immediate Dalek threat to Sir Reginald Styles while exposing the deeper conspiracy of temporal warfare, forcing the Doctor to recognize the escalating danger of enemy infiltration into Earth's past. key_dialogue: [ DOCTOR: Well, then, pop this in here, like that. DOCTOR: Now, as far as I can gather, when you push this button, it should DOCTOR: Good grief! It's working! ]

Plot Beats

The narrative micro-steps within this event

1

The Doctor examines the mysterious case, identifies it as a crude time machine, and activates it, causing the unconscious assassin in the ambulance to vanish.

speculation to confirmation ['laboratory', 'ambulance']

Who Was There

Characters present in this moment

4

Amused fascination masking a deeper urgency to expose temporal interference

The Doctor confidently identifies the alien weapon as a time device, inserts the mini-dematerialization circuit into the captured case, and reactivates the temporal circuit. He witnesses the immediate temporal displacement of the assassin with excitement, directing others to observe the demonstration.

Goals in this moment
  • to confirm the weapon's temporal function through direct activation
  • to neutralize the immediate assassin threat via temporal dissolution
Active beliefs
  • Advanced alien technology often exploits temporal mechanics beyond human understanding
  • Aggressive intervention is justified when temporal warfare threatens Earth's timeline
Character traits
scientifically precise confident provocative temporally intuitive boldly experimental
Follow The Third …'s journey
Supporting 3

Guardedly dismissive but deeply concerned when the assassin vanishes

The Brigadier listens skeptically to the Doctor’s identification of the device as a time machine, questioning its origins and implicitly challenging the notion of temporal warfare. His presence forces the Doctor to justify his claims with technical reasoning.

Goals in this moment
  • to validate the weapon’s origins and capabilities through observation
  • to maintain operational control over the investigation
Active beliefs
  • Extraterrestrial threats exist but must be explained through terrestrial evidence first
  • Time travel remains an unproven and unwise area for military engagement
Character traits
skeptical disciplined institutionally grounded methodically questioning
Follow Brigadier Alistair …'s journey

Stunned disbelief and lingering unease over the weapon’s effects

Benton witnesses the assassin’s disappearance from the ambulance with Shocked surprise. His professional bearing falters briefly as he observes an event that transcends conventional warfare, underscoring the reality of temporal interference.

Goals in this moment
  • to maintain custody of the prisoner during the experiment
  • to document the observed temporal phenomenon as a witness
Active beliefs
  • Temporal anomalies require direct observation to be accepted
  • Military protocol must adapt to phenomena beyond protocol
Character traits
methodical shocked loyal visually focused
Follow Benton's journey

Intellectually intrigued but wary of the weapon's destructive potential

Jo assists the Doctor by examining the circuit, asking questions, and responding to his instructions. She observes with curiosity but expresses confusion about the implications of time travel, reflecting her limited experience with such advanced concepts.

Goals in this moment
  • to understand the Doctor’s identification of the time device
  • to ensure safe handling of the experimental weapon
Active beliefs
  • Alien technology should be approached with caution unless validated
  • The Doctor’s deductions, though unusual, are often correct
Character traits
pedantic curious responsive methodically observant
Follow Jo Grant's journey

Objects Involved

Significant items in this scene

4
Alien Assassin's Temporal Circuits (with Temporal Feedback Circuit)

The Alien Assassin's Temporal Circuits are housed within the captured case and driven by the mini-dematerialisation circuit. Their presence enables temporal warfare by destabilizing local spacetime. The Doctor’s activation erases the assassin, demonstrating their function as both weapon and escape mechanism.

Before: Powered down within the assassin’s captive case, dormant …
After: Erased from the temporal continuum, removed from all …
Before: Powered down within the assassin’s captive case, dormant under UNIT custody in the ambulance.
After: Erased from the temporal continuum, removed from all timelines without physical trace.
Hand-Held Temporal Disruption Device

The mini-dematerialisation circuit is inserted into the alien case containing the temporal device. When the Doctor activates the circuit via a concealed button, it triggers localized temporal displacement, dissolving the assassin’s matter and confirming the device’s functionality as a crude time machine.

Before: Inactive and unpowered, contained within the alien case …
After: Activated and depleted after successfully displacing the assassin …
Before: Inactive and unpowered, contained within the alien case retrieved from the tunnels under Auderly House.
After: Activated and depleted after successfully displacing the assassin into the temporal void, leaving no physical residue.
Master's Ultrasonic Circuitry Flaw

The Mini-Dematerialisation Circuit functions as the triggering mechanism for temporal displacement. Its delicate filaments and amber-like resin hide a power capable of rupturing local spacetime. When activated, it emits a high-pitched resonance and violet glow before dissolving matter.

Before: Dormant within the case, embedded in amber-like resin, …
After: Activated and engaged, its circuits glowing faintly as …
Before: Dormant within the case, embedded in amber-like resin, emitting no detectable energy.
After: Activated and engaged, its circuits glowing faintly as it completes its temporal function, now temporarily inert.
UNIT Temporal Evidence Sample Case

The UNIT Sample Case on a Strap houses the alien ultra-sonic disintegrator and contains the concealed mini-dematerialisation circuit. The Doctor uses it as the delivery mechanism for the temporal displacement, establishing it as both a weapon and a functional artifact in the experiment.

Before: Recovered from tunnel debris, unbuckled and open, revealing …
After: Used as a power source and containment vessel …
Before: Recovered from tunnel debris, unbuckled and open, revealing evidence of temporal energy within its lining.
After: Used as a power source and containment vessel for the temporal circuit, now associated with the successful temporal experiment.

Location Details

Places and their significance in this event

2
Ambulance Medical Compartment

The Ambulance Medical Compartment serves as the secondary witness point for the temporal event. Benton’s observation of the assassin’s disappearance under UNIT guard confirms the phenomenon beyond the laboratory, linking military custody with the direct effects of temporal warfare.

Atmosphere Confinement accentuates tension and disbelief as an event impossible to containment unfolds
Function secured containment and observation post
Symbolism Highlights the fragility of control when temporal forces exceed earthly bounds
Access Limited to medical and security personnel under direct supervision
medical lighting casting stark shadows metallic creaks from structural stress antiseptic scent mixing with enforcer sweat
UNIT Temporal Research Facility

The UNIT Laboratory serves as the primary testing ground where the Doctor conducts controlled experiments on alien technology. High-tech equipment monitors the temporal circuit’s activation, and the firing range provides a controlled environment for demonstrating the ultra-sonic disintegrator’s effects, making this location central to validating the theory of time travel.

Atmosphere Electrified with scientific tension and cautious curiosity, overshadowed by the impending threat implied by temporal …
Function primary scientific testing facility and mission control
Symbolism Represents humanity's provisional victory over alien technology through empirical validation and control
Access Restricted to authorized personnel only, under UNIT supervision
consoles blinking with diagnostics temporal circuits causing intermittent equipment disturbances

Organizations Involved

Institutional presence and influence

1
UNIT Global Command Unit (Strategic Intelligence Taskforce)

UNIT provides the laboratory infrastructure, scientific equipment, and personnel necessary to analyze and test alien technology. Officers and the Brigadier embody institutional authority that both enables and constrains the investigation, bridging scientific breakthrough with military protocol. The organization’s presence ensures controlled experimentation under chain of command.

Representation Through the Brigadier overseeing operations, Jo as technical assistant, and Benton as field security—each representing …
Power Dynamics Exerts hierarchical control over personnel and resources, validating the Doctor’s findings through structured investigation while …
Impact Proves UNIT’s adaptability to events beyond terrestrial comprehension, reinforcing its role as Earth’s primary defense …
Internal Dynamics Tension between military skepticism and scientific intuition, resolved temporarily through empirical confirmation of the temporal …
to secure, analyze, and neutralize alien technology threatening the timeline to protect high-value targets such as Sir Reginald Styles by understanding temporal threats Controlled laboratory environment ensuring safety and containment of temporal anomalies Chain of command and officer supervision overriding individual discretion when necessary

Narrative Connections

How this event relates to others in the story

What led here 6

"The Doctor identifying the time machine and confirming its role in causing the temporal anomalies (beat_783244ff359ef0a6) immediately leads to his decision to use it to deactivate it and to deduce that the assassins will target Styles again (beat_c2392a0f52b1b92f), setting the plan for the climax."

Time machine triggers prisoner's vanishing
S9E1 · Day of the Daleks Part …

"The Doctor identifying the time machine and confirming its role in causing the temporal anomalies (beat_783244ff359ef0a6) immediately leads to his decision to use it to deactivate it and to deduce that the assassins will target Styles again (beat_c2392a0f52b1b92f), setting the plan for the climax."

Doctor realizes assassins will strike again
S9E1 · Day of the Daleks Part …

"The Doctor identifying the time machine and confirming its role in causing the temporal anomalies (beat_783244ff359ef0a6) immediately leads to his decision to use it to deactivate it and to deduce that the assassins will target Styles again (beat_c2392a0f52b1b92f), setting the plan for the climax."

Doctor lures Jo to haunted house trap
S9E1 · Day of the Daleks Part …

"The Doctor's technical skills and curiosity in repairing the TARDIS and dematerialization circuit (beat_4c500595d1ae7a03) directly lead to his rapid identification and analysis of the ultra-sonic disintegrator and time case later in the UNIT lab (beat_436240054b1e5291), showcasing his consistent role as the story’s problem-solver."

Doctor battles TARDIS malfunction during crisis
S9E1 · Day of the Daleks Part …

"The Doctor's technical skills and curiosity in repairing the TARDIS and dematerialization circuit (beat_4c500595d1ae7a03) directly lead to his rapid identification and analysis of the ultra-sonic disintegrator and time case later in the UNIT lab (beat_436240054b1e5291), showcasing his consistent role as the story’s problem-solver."

Doctor encounters time split doubles
S9E1 · Day of the Daleks Part …

"The Doctor's technical skills and curiosity in repairing the TARDIS and dematerialization circuit (beat_4c500595d1ae7a03) directly lead to his rapid identification and analysis of the ultra-sonic disintegrator and time case later in the UNIT lab (beat_436240054b1e5291), showcasing his consistent role as the story’s problem-solver."

Brigadier interrupts to demand urgent mission
S9E1 · Day of the Daleks Part …
What this causes 4

"The Doctor’s analysis of the ultra-sonic disintegrator and the paradox of its advanced yet locally fabricated nature (beat_436240054b1e5291) leads to his examination and activation of the time machine (beat_783244ff359ef0a6), with the weapon’s puzzle serving as a key clue to time-travel involvement."

Time machine triggers prisoner's vanishing
S9E1 · Day of the Daleks Part …

"The Doctor’s analysis of the ultra-sonic disintegrator and the paradox of its advanced yet locally fabricated nature (beat_436240054b1e5291) leads to his examination and activation of the time machine (beat_783244ff359ef0a6), with the weapon’s puzzle serving as a key clue to time-travel involvement."

Doctor realizes assassins will strike again
S9E1 · Day of the Daleks Part …

"The Doctor’s analysis of the ultra-sonic disintegrator and the paradox of its advanced yet locally fabricated nature (beat_436240054b1e5291) leads to his examination and activation of the time machine (beat_783244ff359ef0a6), with the weapon’s puzzle serving as a key clue to time-travel involvement."

Doctor lures Jo to haunted house trap
S9E1 · Day of the Daleks Part …

"The paradox of the ultra-sonic disintegrator being beyond Earth’s technology yet made from local materials (beat_fdcefceecc72422c) echoes the Controller and Technician’s struggle with the time transmitter signal being faint and erratic (beat_332debf3131ca1dc), both highlighting the instability of temporal technology and its misuse."

Technician struggles to stabilize time transmitter
S9E1 · Day of the Daleks Part …